Which of the following is a factor when U.S. courts analyze fair use?

U.S. courts analyze fair use based on four statutory factors, with the "purpose and character of the use" being the first and often most important. This factor considers whether the new work is transformative—meaning it adds new expression, meaning, or message to the original—or if it merely supersedes the original. Non-profit educational or personal use is also weighed. The other options, such as adding a link, including a disclaimer, or crediting the creator, are good practices and may be considered by a court, but they are not among the four statutory factors that define fair use. While they can sometimes support a fair use argument, they do not independently constitute fair use.